/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.core;


/**
 * Interface for {@link FilterComponent}s which provide special support for testing {@code null} values.
 * Special {@code null} testing behavior is switched on by calling the {@link #setNullTestingEnabled(boolean)}
 * method. 
 * @author Marcus Adrian
 */
public interface NullTestingEnableable {

	/**
	 * Method to switch on/off the special {@code null} testing behavior.
	 * @param enabled {@code true} switches on, {@code false} switches off
	 */
	void setNullTestingEnabled(boolean enabled);
	/**
	 * Indicates if the special {@code null} testing behavior is on or off.
	 * @return
	 */
	boolean isNullTestingEnabled();
}
